U350B
Control Module Input Power C Circuit Intermittent/Erratic
U350B is an OBD-II diagnostic trouble code meaning: Control Module Input Power C Circuit Intermittent/Erratic. Common causes: poor contact in the control module connectors, open or short circuit in the power supply. Estimated repair cost: $6–33.
Symptoms
- Unstable engine operation
- Spontaneous shutdown of electronics
- Check Engine Light Illuminates
- Problems starting the engine
- Malfunctions of the on-board computer
Causes
- Poor contact in the control module connectors
- Open or short circuit in the power supply
- Power relay fault
- Fuse problems
- Corrosion on battery terminals
How to Fix
- Check the condition of fuses and relays
- Inspect the control module connectors for damage
- Check the integrity of the power circuit with a multimeter
- Clean battery terminals and check connections
- Test the scanner control module
Related codes
Error U350B by Vehicle Brand
FAQ
What does the U350B code mean?
U350B is an OBD-II diagnostic trouble code that indicates: Control Module Input Power C Circuit Intermittent/Erratic
What causes a U350B error code?
The most common causes of U350B include: Poor contact in the control module connectors; Open or short circuit in the power supply; Power relay fault; Fuse problems.
How do I fix a U350B diagnostic trouble code?
To fix U350B: Check the condition of fuses and relays. Inspect the control module connectors for damage. Check the integrity of the power circuit with a multimeter. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U350B?
Do not drive — repair immediately
How much does it cost to fix U350B?
The estimated repair cost for U350B is $6–33. Actual cost depends on your vehicle, location, and labor rates.
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